Glass-press.



PATENTED FEB. 12, 19o?. E. o. SGHRADBR..

GLASS PRESS. APPLICATION FILED DEU.22,1905.

No. 843,849. PATENTBD FEB. 12, 1907. E. C. SCHRADER. GLASS PRESS.

APPLICATION FILED DEG.22.1905. A

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WITNESSES:

PATENTED PEB. 12,1907.

E. 0. SCHRADER.

GLASS PRESS.`

APPLIGATION FILED DEo.22,1oo5.

5 SHEETS-SHEET 3.

No. 843,849. PATENTED PEB. 12, 1907. E. G. SGHRA'DER. GLASS PRESS.

APPLICATION FILED DEG. 22,1905.

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Nol 843,849. PATENTED FEB. l2, 1907.

E. G. SCHRADR.

GLASS PRESS.

APPLIUAIION FILED DECLZZ, 1905.

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ERNEST o.- sonnnnnn, or KNoXvrLLE, PENNSYLVANIA.

" GLASS-PRESS. i

l Specification of Letters Patent. Application led December 22, 1905. Serial No. 292,948.

To all v .rolwm t may concern:

Be it known that I, ERNEST Q SoHnADER,

residing at Knoxville, inthe county Vof Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered a certain new and useful Improvement in Glass-Presses, of which-improvement the following is a specification.

The invention described herein relates to certain improvements iny glass-presses, and has for its object a construction of mechan-- ism wherein with a constantlyoperating power the table fr presenting the molds to the press and the press-mechanism power are operated intermittently andthe movements of the table and press mechanism are controlled each by the other.

The invention is hereinaftermore fully described and claimed.

In the accompanying drawings, forming a part of this specification, Figure 1- is a front elevation of my improved press. Fig; 2 is a side elevation of the same. Fig. 3 isa sectional elevation on a planeindicated by the line III III, Fig. 1.` Figs. 4 and 5 are sectional plan views on planesy indicated by the lines, respectively, IV and V V, Fig.'l. Fig. 6 is a sectional view on a plane indicated by the line VI VI,'Fig. 4. Figs. 7 and 8 are sectional detail views.

In the practice of my invention the mechanism is preferably mounted upon a platform 1, having wheels or rollers 2, whereby it may 5 be readily shifted vfrom place to place as re- (qiuired. The power-shaft 3 which can be riven by ay'suitable motor*as, for example, an electric motor, as indicated at 1-,-v is mounted in suitable bearingssecured tothe bed-plate 1. .The table 5, carryingthe molds 6, is loosely mounted upon a vertical spindle 7, the connection between the table and the driving power being preferably frictionaland of such character as will insure the rotation ofthe table when unlocked, as hereinafter described. The ta'blev is driven from the power-shaft through a` suitable interposed mechanismor gearing, which when employing a high-speed power as an electric motor is preferably formed by worms and gears 8 and 9 when the power-shaft is so located as to require a counter-shaft 10. It is preferred that a driving-head.'7*V should be connected to the worm-wheel of gearing 9 and that a disk 7b of suitable material should be interposed between thehead and table, so as .to insure the rotation of the latter when unn,

Patented Feb'. i2, 1907.-

locked. The pressing mechanism 1s oper.

ated by a shaft 11, which isalso driven from the power-shaft 3, through suitable inter` struction shown the shaft 11 is driven from' -the shaft 10 through -suitable interposed gearing consisting of the gear-wheels 12, 13,

and- 14., the gear-wheel 14 being loosely mounted upon a shaft 15 and being provided With a member 16 of a clutch mechanism, `the other member 17 being so connected to the shaft 15 as to be capable of being shifted valong the shaft and" to drive the same when` placed in engagementwith the member 16.

' The shaft 15 has a pinion 18 secured thereon and intermeshing with a gear 19 on the shaft 11.4 The movable member 17 of the'clutch is provided witha .peripheral groove for engagement with the arms of a yoke 20, se-

cured toa sliding rod .21, which is provided with an arm 22,projecting out parallel with the side of the gear-wheel 19. .This gearwheel 19 is provided with a projection or dog 23, which during the rotation of the gear wheel 19 will strike against the arm 22 and shift the rod 21 longitudinally in such direction as to elfect a disengagement of the clutch member 17 from the member 16, thereby stopping theoperation of the pressing mechanism. The rod 21 is held in adirection opposite that in which it is moved by the projection 23 by a spring 26, surrounding the rod, as clearly shown in Figs.4 5 and 6.

As in the Operation of the machine a is deT f sired that the table should be operated t0.

carry a'newnlold into positiony under. the pressing-plunger, as soon as the presslng mechanism has ceased operation provision 1s Amade for4 unlocking the table simultaneous with the disengagementV of the pressing mech-fV I anism from its driving'means. In the con struction shown the table-lock consists of a pin 27, movably mounted in the frame of the machine and adapted to be forced up to en- IOC' gage holes 28 in the table 5 when a mold is in.

his p1n can be operated from the rod` 2 1 in any suitable manner-as,'for example, by

fp'roper' position under the pressing-plunger.l

means of a bell-cranklever 28, connected to a collaror lug 29, secured to the r'od 21. this construction the longitudinal movement of the rod 21, which opens the clutch mechan- TIO ism, will at the same time withdraw the pin r 27 from engagement with the table,-thus per-v mitting the latter to be rotated by frictional engagement with its driving-shaft.

While the operation of the parts for con necting the pressing mechanism with its driving means and for unlocking the table can be made auomaiqboth as regards the disen- 1' gag'ement of the driv ing mechanism from the pressingme cha nism and unlocking of the t able I and-also/of thelo5king of the table and the I means ofpfa treadle 30, connected to4 a shaft 31, to which is-secured an arm 32, engaging the rod 21.

The projection 23 ipreferably made in the form of a dog, pivot ly mounted in arecess in the gear-wheel 19 and normally or just prior to its engagement with thel arm 22 lies partially the recess in the gear-wheel. As the gear-wheel in its rot ation in the direction of thearrow a in Fig. 8 brings the dog 23 into engagement'withx the arm 22, the dog will turn on its pivot-pin and move outward, pushing the arm 22 to the left, and thereby shifting the rod .21, as hereinbefore described, to disengage the members of the clutch. When it is desired that the pressing mechanism should again opera' e, the operapordepresses the treadle 30, thereby moving the rod 21 to the left 'in Figs. 5 and 6. This movement of the rod 21 will shift the arm 22 out. of contact with the dog 23, permitting it `to drop back into vits recess, so that on the removal of the foot of the operator from the pedal the spring 26 will move the rod 21 to the right, causing the clutch members to' engage and forcing the pin 27 into engagement with the table.

The pressing mechansm consists of a crosshead 33,.'movably mount ed on guide-rods 34,

secured to the frame of the machine. The

. outer ends of this cross-head are provided with trunnions for the reception of the heads on the rods 35, which extend down and are connected, as shown in Fig. 2, to arms 36, secured to a rocking' shaft 37, mounted in suitable bearings on the frame of the machine. These arms are provided with curved grooves or slots 38 for the reception of pins 39, eccentrically mounted on disks 40, secured to the shaft 11. The grooves or slots are so shaped that when the pin is passing along the portion b thereof there will be a dwell of the plunger in its lowest position, thereby affording an opportunity for the glass to set and harden after being forced to the desired shape of the mold. VS hle not necessary, it is preferred to counterbalance the weight of the cross-head and other pars carriedl thereby by means of a weight 41, adjustably secured on an arm 42- lon the shaft 37. A

The mold-ring is secured to a late 43, which is carried by a plate 44, provide with guidingsleeves surrounding the rods 34. This moldring has thev usual or'V any suitablel resilient connection to the carrying-plate'44.

In hand-operated presses the operator can tell by the feel the amount of pressure required to properly shape an article and when the mold is filled. 'In power-machines provision should be made so that only a certain predetermined pressure can be exerted upon the glass. i To this end I 'provide means interposed between the cross-head 35 and the rod 45, carrying the plate 44 and the plunger 'Y 46, whereby only a certain predetermined pressure can be applied to the glass in the mold. lAs shown, a block 47 is adjustably supported on the rod 45'by means of a nut 487 screwing on the threaded portion of the rod. This block 47 is :provided with fulcra 49=for the levers 50, said levers being by preference connected by the fulcra by pins 51. The inner ends 'of these levers 50 are loosely con.

nected, preferablyby links 52, 'to the crosshead 33, preferably through a disk 53, provided with lugs 54, to which the links 52 are also connected. This disk 53 is provided with a stem 55, secured to the cross-head 33.`

Weights' 56 are movably mounted upon the levers, it being preferred that antifricti'onbearings, such as the rollers 57, should be interposed between the weights and the levers, so that the weights will move freely and quickly along the same. The movements of the weights on the levers are limited by adjustable stops 58 and 59.

It will be -readily understood by those skilled in the art that when a certain predetermined resistance is presented |to the plunger 46, such resistance beingflxed by the position of the weights 56 'onthe levers,

that the inner ends of the levers will be depressed, raising their outer portions so that the weights will move inwardly, so that thereafter a less pressure willbe exerted on the glass proportional to the inward movement or extended inward movement of the weights along the levers.,

ln-order to prevent a shockto the machin- 'ery, due to the returnV movement of the Weights 56 and the dropping of `the levers 50,

Ico

when the cross-head begins its upward movement it is preferred to employ dash-pots to regulate these return movements. As shown in Fig. 3, these dash-pots consist of cylinders 60, in vwhich move pistons 61, connected by as to permit tlie ready upward movement of thereof.

`stems to the levers. A valve is so arranged In order to provide for the removal of the articles from the molds 6, movable bottoms 63' are provided, said` bottoms resting upon pins 64,'eXt-ending down through thel distance along the path of movement of,

these pins for a portion of their circular traverse and is so arranged as to effect an upward movement of the pins 64. 4 It at times happens that the glass has not hardened when the ejectors operatethereon, withthe result that the bottom of the glass is forced upward without forcing the upper portions of the articles above the mold. In order under such conditions to insure the removal of the glass, the track 65 is pivotally connected at one end to a suitable support, while other ,portions are supported by suitable means, one of which is made movable, so that the track can be raised -when desired. In the construction shown this movable support consists cfa sleeve 66, surrounding a post 67, secured to the frame of the machine and connected by a link to an operating-lever 68. By depressing this lever -and sleeve 66 and with it the track 6.5 can be raised, thereby further forcing up any pins 64 resting thereon.

While not necessary, it is preferred to eml/Vhen the table is operated at a consider- 5 1 able speed, it is possible that at times the holes in the table will be carried past the pins 27, or if not carried past there Will be an un,

desirable shock or jar, due to the engagement of the pins with the table. In orderl to prevent either of these contingencies,a brake is employed to check the movement ofthe table as one of the holes therein comes into alinement with the pin 27. In the'construcc lease the dog 23, which Willdrop, as before stated, into the recess inthe Wheel 19. When the treadleis released, the spring 26 will force the rod 21 to the right, causing. the clutch members to engage and also forcing the pin 27 up to lock the table in position. Thereafter the driving-head 7a will rotate Without affecting the table, and the gear- Wheel 19 will be driven to operate the disks 40, causing the pins 39 to shift the levers 36 and pull dovvn the plunger. When the shaft- 11 has made one rotation, thereby dravi'rin"- down the plunger and returning it to normal upper position, the dog 23 Will engage the arm 22, shift Jthe rod 21 tothe right, separating the clutch members, and withdrawing the pin 27 from the table, which will thereafter be rotated until another mold comes into proper position with reference ,to the plunger. The operator can depress the lever immediately' after the table begins to rotate, therebyA releasing the dog 23, as this release will not permit a return lof the rod 21 to the lpin 27 bearing on the under side of the table.

When thetreadle is depressed, as it should be immediately after the table begins to rotate, stoppage of the table will be automatic.

I claim herein as inventioni 1. In a pressing mechanism, the combina- 4tion of a pressing mechanism, a mold-table, a continuousl','-operating power-shaft', continuously lin driving relation to the table, and

means operative by the shaft for alternately `nulliffing the function due-to such relation and connecting `the pressing 'mechanismf to the shaft'. l 1

2. In a pressing mechanism, the combinaconnection means controlled b v thepressing mechanism for-locking the tables 3. In a pressing mechanism, the combination of a continuously-operating power-shaft, actable having a frictional driving connection with said shaft, a pressing'mechanism, ata- IOO ble-lock, means for -connectingthe pressin` f mechani sm to the p'oWer-shaft, said lock an connecting means being controlled by the pressing mechanism.-y 4. In a pressing mechanism, the combination of a continuously-operating power-shaft,

a table having a frictional driving connection with said shaft, a pressing'mec means 'controlled by the table forconnecting anism, and

the pressing mechanism with the power-shaft.

5. In a pressing mechanisnnthe combination of a plunger, a cross-head, means for operating the cross-head and a yielding connection between the cross-head vand plunger whereby the pressure exerted by the plunger mav vary automatically in proportion to the resistance to the plunger.

6. In a pressing mechanism the combination of a plunger, a cross-head, means for operating the cross-head and an adjustable andv varying vielding connection. between .the

cross-head and plunger, whereby the pressure exerted by thecross-head may vary automatically in proportion to the resistance to the plunger.'

7. In a pressing mechanism, the combination of a plunger, a cross-head, means for option of Ia mold-table, means for rotating thev table, -ejectors for forcing articles from the` erating the cross-head, a connection from the cross-head to the plunger presenting a gradual1' y'decreasing.resistance tothe movement ofthe cross-head independent of the plunger. 8. In a'pressing mechanism,vthecombina tion of a plunger, levers pivotall'y connected to the plunger, Weights movably mounted on the levers, and a cross-head operative on the levers to shift the plunger.

9. In a pressing mechanism, the combinamolds, a track for shiftingvthe ejectors and means for shifting the track.

10. In a pressing mechanism, the combinaltion of a continuousl'J-operating power-shaft,

' a mold-table having a ffictional-driving connection to said shaft, a pressing mechanism and means for intermttingly connecting the i pressing mechanism to the power-shaft.

1 1 In a pressing mechanism, the combination of a continuously-operating power-shaft,

a mold-table having a frictional driving connection to said: shaft, means for arresting the movement of the-table, a pressing mechanism, a clutch mechanism for connecting the pressing mechanism to the power-shaft; and means operative by the pressing mechanism to open the clutch and to shift, the table-arresting means.

In testimony whereof- Ihave hereunto s et 

